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Mathematics 13 Online
Johnb:

If a triangle is rotated about the y-axis as shown below, what three-dimensional figure would be formed?

Johnb:

1 attachment
itsmehjay:

Are there any answer choices?

snowflake0531:

@AZ you can take a 'stab' at it if you want lol

snowflake0531:

btw, if it's rotated 360 degrees 'around' the axis, isn't it just the same?-_-

snowflake0531:

OHHHHHH AZ i take it back, i want to do this

ScamTheMan:

Well, when it comes to three dimensional objects, there's not a whole lot. Going through all of them, we know that the only three dimensional shape that can be made from a triangle is either a cone or triangular prism.

AZ:

I will let ScamTheMan stab it

snowflake0531:

fgvyhjuko

ScamTheMan:

oh whoops

AZ:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 btw, if it's rotated 360 degrees 'around' the axis, isn't it just the same?-_- \(\color{#0cbb34}{\text{End of Quote}}\) It would be the same shape but like a different size

snowflake0531:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ \(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 btw, if it's rotated 360 degrees 'around' the axis, isn't it just the same?-_- \(\color{#0cbb34}{\text{End of Quote}}\) It would be the same shape but like a different size \(\color{#0cbb34}{\text{End of Quote}}\) i realized i didn't understand the question earlier

AZ:

@JohnB you still there?

snowflake0531:

s/he's lurking

snowflake0531:

anyways, cut out a piece of paper, tape a pencil to it, and wrote the triangle with the pencil still in the middle (this is what our teacher made us do-_-) and then you'll see clearly what shape it turns into

snowflake0531:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 anyways, cut out a piece of paper, tape a pencil to it, and wrote the triangle with the pencil still in the middle (this is what our teacher made us do-_-) and then you'll see clearly what shape it turns into \(\color{#0cbb34}{\text{End of Quote}}\) *rotate, not wrote

KIllerwolf:

rotation

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